Manufacture and production of threads, filaments, strips, or films from cellulose compounds



- celluloseester, (such, for lose acetate) in any suitable solvent, or-

Patented Sept. 7, 192$,"

' UNI ED,

"srArns"; PArENr OFF CE- Y nonacngrmns BEGAN, or covnx'rnm'nnnm, 'assrenon. 'ro counraimns -murao'runn am) v No Drawing. fl pp lication filed January 13 19 25,

' This invention manufacture and ments, strips, or

mm), OF LONDON,

consists in an "rove l. lOdllctlollzpf threa filaby preclpitating, or

coagulating, cellulose esters from solutions thereof.

According to mixture of solvents, is

suitably shaped orifi "ducedinto a fatty aci tained from fats, oleic acid being particularly for the purposes of this invention-.-

kind aforesaid, or a mixacids, can be employed as may ture of such be desired; The cellulose compound, in th animal, or

fatty acid of the process according to this ly precipitated and can excess of acid in an In this 'way, arti can 'be spun, an itv and freedom from this inventions solution'of a example, as celluprOJeoted through or otherwise introsuchias can be obvegetable', oils, or. suitable e invention,is rapid;

be freed from any I suitable manner." fatty, acid is cial silk of good qualit (1 products of great pliabi blemishes be obtained The cellulose ester employed may-be dissolved in any suitable solvent, or solvents,

miscible with'the acid, or acids, used for recipitating and these solvents can be rea il and completely recovered from the acid, or

acids, by distillation, able means; I

If desired, an animal or by any other suitoil, or a vegetable oil such for instance as castor oil, linseed oil, or cod-liver oi1- (ormore t r g i of one-tenth of a millimetre diameter into a bath of oleic acid, maintained at .a

The acetone is remove The to owing than one such oil) can be usedin admlxture said'fat acid or fatty acids.

s an example with the aforeof a manner Y in, which this invention can beiperformed but I 'do not limit myself to thisexample. Dissolve cellulose acetate/in four times its weightof acetone and eontaimng perature of, or about, 35

project the solution elghteen holes each temdegrees c'enti rnonuc'rron ama, rmnmtrs,

rnom -onr.r.unos n eonmotnsms.

A single de. d from the 04; ulose r 'srms on mm Serial nq. am, am Great Britain February {1924.1

employed. Also, if desire an animal, or vegetable, oil can be mixed with the oleic 60.

acid; for instance the coagulatingbath may be composed-of two parts of oleic acid, and one part each of; castor ,oil and olive oil.

In the following claims the expression to be read as meaning a fat 05 can.b'ejobtained from anima, oils, or fats, and of acid such as or vegetable,

such acids; and theexpressionfan oil in- Y Y oil,, ood-liver oil,

oils and mix--10 cludes castor-oil, and other animal, or vegetable, tures of such oils. 7 WhatIclaim-is:-'

1. ,llhe manufacture of threads, filaments,

stripsand films, by projecting a solution-of v cellulose ester into a coagulating bath}; taining a fatty acid such as can-be obta fromanimal, or vegetable, oils, or fats.

2. The manufacture of threads, strips and films, from a solution of cellulose acetate in acetone by projecting such solu- 80 tion into a bath containiniloleic acid.

3. The manufacture of.

strips and films from a solution'of cellulose acetate in acetone, byprojectinf an oil.

onto a bobbin. The Y 'aments, threads,

such a-solu-' tion into a bathoontainingo eic acid In testimony'whereo f l have signed my name to this specificationv Honnbn JAMES BEGAN, Y 

